[457833] Test for prevent resolving proxy when removing CrossRefAdapter

commit of:
 - Automatic test
 - plugin org.eclipse.sirius.tests.sample.component

Bug: 457833
Change-Id: I312ed4b7031ef58553aa72eed0a1f7bdcabd612f
Signed-off-by: Laurent Fasani <laurent.fasani@obeo.fr>
25 files changed